Hi Martin, This would address one of the issues you raised. Feel free to keep the discussion going on it:
https://github.com/hotosm/osm-tasking-manager2/issues/606 *Tyler Radford* Executive Director email: [email protected] U.S. mobile: +1 617.285.2009 *Humanitarian OpenStreetMap Team * *Using OpenStreetMap for Humanitarian Response & Economic Development* web <http://hotosm.org/> | twitter <https://twitter.com/hotosm> | facebook <https://www.facebook.com/hotosm> | donate <http://hotosm.org/donate> On Sun, Dec 6, 2015 at 9:49 AM, john whelan <[email protected]> wrote: > Perhaps what we need to do is do a small reality check. The HOT tile > system is geared up to one mapper completing one tile then a second mapper > validating it. The first mapper then corrects any errors if any and the > tile is validated and marked completed. > > Yes but that doesn't seem to be quite what happens. In Nepal 70% of the > mappers mapped once and it was probably their first time mapping. If you > invalidated a tile odds are the first mapper would never return to do any > corrections anyway. > > I recently attended a physical maperthon, not a single tile was completed > despite instructions which were followed to split the tiles to the smallest > extent first. Not knowing the userids at the maperthon I thought I'd go in > and validate / give feed back what had been done. > > I validated one tile, project 1234, adding forty nine settlements to the > thirty that were already there. I gave up on another tile, not the easiest > to map, at what distance do you decide two buildings are part of a > settlement? But it had a fairly large number of mappers working on each > tile. There has been no activity for the last nineteen days so I think we > can safely say that project has died. > > The Ebola mapping, 101 mappers did more than 60% of the mapping. 3,500 > mappers did less than 40%. > > To me the more successful projects seem to have one validator and a small > team mapping. Talking to an end user of the data they much preferred > validated maps, they were more reliable. > > In Nepal I worked with a small team again and we went over the tiles > validated or not and revalidated them. The data quality was so bad at one > point I just went in with JOSM validation and used that to clean up and > validate. The rest of the team were good and went over the tiles looking > for buildings, normally they found 30% more and this was on both validated > and tiles marked complete. > > On the other end of the scale I've looked at tiles that were complete but > not marked done. Not every mapper feels confident enough to mark a tile > complete. > > Having half a dozen mappers go over the same tile isn't really the best > use of resources and people's time. We don't have enough mappers and > although they don't cost us anything it would be nice to move one or two > from the 3,500 to the 101 catagory. > > I still think for some mappers if they mark a tile done then it should be > automatically validated. Yes somethings might be missed but I don't think > we're after perfection or at least I hope not, but the general quality of > work would be higher. > > One thing we haven't touched on is the NGOs themselves. They have > thousands of volunteers, perhaps if they want a particular project > prioritised we should make it easier for them to use their own resources. > I know the HOT training group is working on making it simpler to start > mapping for HOT purposes. > > Rant over, I'll go back to sleep. > > Cheerio John > > > > On 6 December 2015 at 07:34, Martin Noblecourt <[email protected]> > wrote: > >> Dear all, >> >> This is an interesting topic, I think what is important is to focus on >> how the data will be useful for responders & communities on the ground. >> On some requests (particularly for humanitarian operations), what we >> really need is to obtain a first overview of an area (villages & roads) >> fast. I've sometimes tried to put the focus on it using the instructions >> (e.g. the projects 1343 <http://tasks.hotosm.org/project/1343> or 1262 >> <http://tasks.hotosm.org/project/1262>), however on both tasks I saw new >> mappers spending a lot of time tracing buildings whereas it wasn't >> necessary (yet), and (sometimes very) experienced mappers unvalidating >> tiles because a track was missing on a corner of a task. Although the >> latter were right to do so in absolute, in both case it wasn't really >> helping the task being completed faster (since lots of new mapper then >> spend time working again and again on the same task to get it perfect). >> >> My question is: how can we better highlight when a project is a "first >> pass" for which it is admissible to miss a few details in order for the >> project to be completed faster? And an additional one: on some projects >> part of the area to cover doesn't have imagery good enough to trace, could >> it be useful to add a button to specify that (different than marking it >> done & leaving it unmarked) to avoid several people looking at it again and >> again? >> >> Thanks & best regards. >> >> -- >> Martin Noblecourt >> >> *[email protected] <[email protected]> | Bureau/Office: +33 >> (0)4 79 26 28 82 <%2B33%20%280%294%2079%2026%2028%2082> | Skype: >> martin.noblecourt* >> CartONG - Mapping and information management for humanitarian >> organizations | Cartographie et gestion de l'information pour les >> organisations humanitaires >> >> >> ------------------------------ >> >> Message: 3 >> Date: Sat, 5 Dec 2015 20:28:50 +0100 >> From: Blake Girardot <[email protected]> <[email protected]> >> To: "[email protected]" <[email protected]> <[email protected]> >> <[email protected]> >> Subject: [HOT] Projects on the HOT OSM Tasking Manager - lots of them >> Message-ID: <[email protected]> <[email protected]> >> Content-Type: text/plain; charset=utf-8; format=flowed >> >> Hi everyone, >> >> Dale, among others have been working to update and review all the >> current projects on HOT's main OSM Tasking Manager: >> http://tasks.hotosm.org/ >> >> After much work on their part, a lot of projects have shifted up in the >> list. >> >> If you have not had a chance to visit the tasking manager lately, it >> would be a great time to do so as there are a lot of new mapping >> projects and existing projects that need mapping. >> >> We really need more regular mappers as we get more and more requests for >> HOT mapping. HOT and OSM's value is being recognized by more and more >> humanitarian organizations and we are very challenged to keep up with >> the requests we get. Any amount of time you can donate to mapping is >> very helpful. >> >> Tweeting and Facebooking out the MapGive "Why Map?" video would also >> make a huge impact. They have easy to click twitter and facebook links >> on their why map page: >> http://mapgive.state.gov/why-map/ >> >> And there are links to the learn to map videos they make as well. >> >> And of course, while you are tweeting and sharing about HOT, please help >> spread the word about our first ever direct fundraising effort: >> https://donate.hotosm.org/ >> >> Cheers, >> Blake >> >> >> >> >> _______________________________________________ >> HOT mailing list >> [email protected] >> https://lists.openstreetmap.org/listinfo/hot >> >> > > _______________________________________________ > HOT mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/hot > >
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